Temple thread cutter for looms



July 18, 1933, F. E. DOUGLAS ,1

TEIPLE THREAD CUTTER FOR LOOIS Filed Feb. 9, 1933 W/ T/VEJJ' fkfaelc E. DOUGLAS.

INVENTOR.

C2 //v To/v 6; CoBuE/v.

Emma/M ATTORNEY.

Patented July 18, 1 933 UNITED STA E NT rnEDRIc EfDoUGtAs, or; HOPEDALIE, MAssAcHUsETrs,,AssIGNoR T DRAPER 3 0.]

RATION, or HOPE-DALE, MASSACHUSETTS, A CORPORATION or MAINE TEMPLE. THREAD CUTTER FOR toonrs Application filed February 9, 1933. Serial No. 655,961.

The present invention relates to the thread cutting mechanismof a loom temple, and has more particular reference to the type of such mechanism which includes a stationary ledger blade and a movable cutter blade positionedin a guideway in thetemple head. I

The principal object of the invention is to provide a temple thread cutting mechanism of the type noted, having means for procuring an improved shearing relation between the ledger blade and the cutting edge of the movable-cutter member. 1

A further object of the invention is to provide a movable cutter'blade which maybe inserted in existing temples to thereby pro cure the aforementioned improved shearing relationbetween the respective blades which constitute the thread cutting mechanism.

Two embodiments of my invention are illustrated on they accompanying drawing, in which: i a

- Fig.1 is a view'in elevation of the rear face of a temple embodying one form of my improved thread cutting mechanism;

Fig. 2 is a view similarto Fig.1 but showing the second embodiment;

Fig. 3 is a plan view of the temple shown in Fig. 2, but with the cap removed a Fig. 4 is atop plan view of the movable cutter blade, which appears in both Figs. 1

and 2; and

Fig. 5 is a view, in elevation, of the blade shown in Fig. 4; r The temple shown in Fig. 1 includes a suitable bar lby which it is supported, a head coniprised of pod 2, cap 3 and a roll orrolls 4, aedependinghee'l 5 by which the temple maybe reciprocated, and the thread cutting mechanism to be hereinafter described. The temple shown in Figs. "2 and 3 is similarly constituted, the bar, pod, cap and heel there- I of being designated by reference numerals 1, 2', 3' and 5, respectively.

The pod and cap 2, 3 or 2 and 3 are provided with cooperating cut out portions constituting a guideway 6 or 6 which is positioned substantially in a vertical plane and extends longitudinally of the temple head, preferably entirely therethrough. The

i I only, the

th'read cutting mechanism illustrated there-1 .e

in is comprised of a fiat steel ledger blade ,7 anda movable cutter blade 8. -'Ihe.l'edg'ei" blade 7 is positioned vertically in the guide way 6 at one side of the rearward end there-' of and extends upwardly into a groove or; slot in the temple headwhere itis secured by the head of a screw 9. A rear, vertical corner on the ledger blade is sharpened, to form a cutting edge.

The movable cuttermernber8 is formed,inthe main, of a rigid metal body portion10, which is preferablyfiat on both sides so as to be positioned in a vertical plane in the guideway. Atthe forward end ofth'e' body portion 10 is a usual form of depending operating portion ,11 which is adapted to be struck by theflay, (not shown) for causing the blade to firstrock, to hook behind the filling, and then slideforwardlypast the cutting edge of the ledger blade. The blade Sis urged toward its normal rearward position by a conventional form of spring 12. Y

Therearward end of the body portion of the blade 8 is provided with a rearwardlyex tending finger 13 which forms a backing for the cutting tip 14. The body portion 10, operating portion 11 and backing finger'13 are, inIthe present instance,ca'st integrally of brass or cast iron, although they may be'other- 7 Wise constituted, provided sufficiently strong and rigidi I, I

' The cutting tip 14 is formed ofa flat piece of steel, and is resilient, for-a purposespecified presently. The forward endof the cutting tip contacts the body, portion 10 and is that they "are class in the face thereof. 1 The cutting tip extends rearwardly alongside the backing finger but the rearward end of the tip, which is provided with a depending cutting portion having a sharpened edge 15 for cooperation with the ledger blade, is biased slightly away fromthe rearward end of the backing finger. This may conveniently beaccomplished by bending the tip intermediate its ends, in the secured thereto, as by being i e? process of manufacture. The cutting tip bears laterally against the ledger blade.

Means are provided for laterally adjusting the relative positions of the movable cutter blade and ledger blade. In Fig. 1 this is accomplished by adjusting themovable blade. As shown, a bendable strip 16 is positioned in the guideway 6 on the opposite side of the movable blade from the ledger blade. An adjusting screw 17 in the end wall of the temple head bears against the strip 16. By turning the adjusting screw, the strip may be bent and the movable cutter blade pushed toward the ledger blade.

The temple shown in Figs. 2 and 3 employs the same, movable cutter blade 8, but the ledger blade and adjusting means are different. There-in, the ledger blade 18 is positioned in the guideway as before, but extends upwardly and then laterally over the top of the temple cap and is provided with a slot 19 through which-a cap screw 20 extends. Upon loosening the screw the ledger blade maybe moved toward or from the movable blade and then'clamped in adjusted position; Other adjusting means may readily'be devised if so'desiredfl Regardless of which form of adjustment isemployed, i. e. whether adjustment is made by 'themovableblade or ledger blade, it will be apparent that sincethe cutting ,tip is resilient adjustment of the two blades closer together 'will result in springing the cutting fit portion of the tip toward the backing finger. 13., This, in turn, results in the finger and tip contacting each other throughout a greater proportion of their length, thereby, in effect,

decreasing the free length of the-tip, and making 'it' bear harder. against the ledger blade. Thepressurewith which the cutting tip contacts'the ledger blade maybe Varied inaccordance with the size and nature of the threads to be cut.

A further advantage of the present construction lies in the fact that the slight space between the cutting tip and backing finger renders the mechanism less liable to become jammed if, for vsomereason, a thread is not cut'but is merely drawn in between the two blades, the perfectly rigid bladesof the prior art being, in such instances, likelyto become locked out of operation by the wedged thread. At'the sametime, the backing finger 13 effectively prevents undue bending and distortion of the cutting tip, which would otherwise be likely to occur in the event of faulty operaat present, I prefer, is not to be construed as a limitation upon the true scope of the invention, which is defined in the-appendedclaims. I claim: 1. A thread cutting temple for-looms, including a temple head having a guideway extending longitudinally thereof, a station-- ary ledger blade and a movable cutter blade positioned in said guideway, said movable cutter blade being composed of a rigid body portion having a rearwardly extendingbacking finger and a resilient, steel cuttingfltip secured to said body portion so as t Extend alongside said backing finger, said cutting tip. contacting said body portion at its tiers ward end only and beingbiased away said backing finger into sheaningrelation to the said ledger blade, and means for-lat, I

er-ally adjusting the relative positions ofsaidtioned substantially in the sameverticalplane as said bodyportion, anda resilient,.steel cutting tip having its forward-end to and in contact with said body portion:an d having its rearward, cutting end vs ced slightly away from the rearward .endoi backing finger. H y r 3. As an article of manufacture, :a-outter blade for thread cuttingtemples, said blade being'comprised of arigid metallic body portion having at its forwardend a, dependingoperating portion and at'itsmarward end a rear-wardly extending backing finger pogitioned substantiallyin the same vertical plane as sa1d body portion,- and aresilienh-steel cutting tip having its forward .and secured.

to and in contact with saidb'ody portion and,

having at its rearwardend a dependingcutting portion, said cutting tip ibein fbent slightly intermediate its ends, to there%y'bi'as its rearward end away fromthesa'id backing finger. 1 I I FREDRIC E. DOU v lee aid 

